David Archy Men's 4 Pack Bamboo Rayon Soft Lightweight Pouch Briefs 95% Bamboo Rayon/ 5% Spandex Imported Note: We are upgrading the waistband colors, so you may receive the one different from the previous version. Sorry for the confusion. But the two versions are same good. Gentle machine wash in cold water, to maintain maximum performance and recovery Bamboo rayon is a kind of cellulosic fiber extracted from natural materials-bamboo. It is featured with good air permeability, instant water-absorbing, lightweight and stable dyeing property. Ultra soft fabric, more breathable and lightweight than cotton underwear Big pouch underwear to keep your goods well placed and stay comfortable Strong and soft stay put waistband with classic logo which is good to reduce the stimulation to your skin. NOTE: Two kinds available: one with functional fly ; the other no fly. Please check the color name and picture details clearly before ordering.